- further fixes of inccorect overflow errors for int (and long on LLP64 systems) * prev commit had bugs * added overflow tests for also int, long, long long (for both, lp64 and llp64) - while at it, fixing a reference leak when not using python with utf8 caching

parseStructInfos("
SDL_keysym{CiiS}scancode sym mod unicode ;
SDL_KeyboardEvent{CCC<SDL_keysym>}type which state keysym ;
")